Giant Abacus

For this activity we need the following materials:

- 3 balls of wool.
- 30 cardboard cylinders.
- Red, blue and yellow paint.
- Paint brushes.
- Tape.

The activity consist of making a giant abacus in class. We will continue the following procedure:

1. Paint the cardboard cylinders one colour in sets of ten.
2. Measure the string of wool and cut it to size of the classroom's width.
3. Slide the cardboard cylinders onto the string and attach the string to the wall.

We will use the abacus as a resource for learning to count and for working on basic arithmetic.